#  first term must be #.  anoy  comment any data may be placed.
#  first data of which raw does not start with # will be employed
#  as color: 
# lightslategray
# midnightblue
# darkblue
# darkgray
 darkcyan
# darkslateblue
# see:  https://www2.uni-hamburg.de/Wiss/FB/15/Sustainability/schneider/gnuplot/colors.htm